Leadership Team

Leadership Team


Robert Huffstodt – President and Chief Executive Officer

Mr. Huffstodt joined PTS Diagnostics as Chief Financial Officer in July 2001, and was named President and Chief Operating Officer in October 2001. In December 2002, he was promoted to President and Chief Executive Officer. Previously, Mr. Huffstodt was Executive Vice President and Chief Operating Officer for Quatro Systems, Inc., a leading electronics manufacturing services provider in the Southwest. Prior to joining Quatro, Mr. Huffstodt was President and Chief Executive Officer for Lukens Medical Corporation (NASDAQ:LUKN), a manufacturer of various medical devices, primarily surgical sutures, lancets, and other disposables. Mr. Huffstodt began his career as a Certified Public Accountant, and worked for the Metropolitan Services Group, a division of Price Waterhouse located in New York City where he focused on smaller businesses. Mr. Huffstodt holds a Bachelor of Arts in Accounting from the University of Notre Dame.​


William Benedict – Vice President and General Manager

Mr. Benedict came to PTS Diagnostics in 2006 as Director of Operations and later served as Vice President, Technology and Compliance. He was promoted to his current position of Vice President and General Manager in 2013. While at PTS Diagnostics, he has implemented automation and lean manufacturing practices and instituted continual auditing to maintain the highest levels of compliance. He oversees executive management of PTS Diagnostics’ operations, including manufacturing, quality, IT, clinical, and regulatory. Mr. Benedict is a member of the American Society of Quality, Parenteral Drug Association (PDA), and the Regulatory Affairs Professional Society. He holds a Bachelor of Arts in Biology from Purdue University and a Master of Business Administration from the University of Indianapolis.


Stephen Riendeau – Chief Commercial Officer

Mr. Riendeau joined the PTS Diagnostics in 2007 after 17 years of industry-wide sales experience with Specialty Laboratories, Inc., Myriad Genetic Laboratories, Orca Medical Systems, and Abbott Laboratories, Inc. His professional experience prior to PTS Diagnostics included the servicing of individual accounts, territory management, field sales management, and executive direction of corporate accounts. He has overall responsibility for PTS Diagnostics’ global sales in all healthcare segments, sales distribution, and  the development and execution of the company’s strategic sales plan. Mr. Riendeau received a Bachelor of Arts in Economics from Florida State University.


Cliffe Allen – Vice President, U.S. Sales

Mr. Allen joined PTS Diagnostics as Regional Sales Director in October 2015, before being named Vice President, U.S. Sales in July 2016. He has nearly 30 years of experience in diagnostic and consumer healthcare with Glaxo SmithKline, Roche Diagnostics, and Thermo Fisher Scientific. His previous positions primarily focused on leading teams with responsibility for physician, hospital, managed care, and retail partnerships. He is now leading the PTS Diagnostics U.S. sales team in all segments, as well as the development and execution of the company’s strategic plan. Mr. Allen holds a Bachelor of Arts in Accounting from Western Kentucky University.


James “Andy” Anderson, Jr., M.D., FFPM, FACE – Medical Director

Dr. Anderson trained in Internal Medicine and specializes in Endocrinology. He has more than 35 years of clinical and research experience, including Interim CEO at Antigen Express, Inc.; Director and Senior Scientific Advisor of Generex Biotechnology Corporation; CEO and President of Symcopeia Company; Clinical Associate Professor of Medicine at Indiana University School of Medicine; and Senior Medical Director for Diabetes and Cardiometabolic Medicine at Eli Lilly and Company. Fellowships include the American College of Endocrinology and the Faculty of Pharmaceutical Medicine of the Royal Colleges of Physicians (U.K.). Dr. Anderson has degrees from Louisiana State University School of Medicine, New Orleans, and Centenary College of Louisiana. 


Rich Mussmann – Vice President, Global Product Development

Mr. Mussmann joined PTS Diagnostics after serving as Vice President of Research, Development & Engineering for Radian Research, Inc., a precision instrumentation company. Prior to Radian Research, he co-launched Nano-Rad, LLC, a development-stage medical device company specializing in breakthrough brachytherapy radiation therapy for breast cancer. He has also held executive leadership roles for Hill-Rom Holdings, Integ, Inc., Medtronic, Inc., and Baxter Healthcare Corp. Mr. Mussmann holds Master of Science and Bachelor of Science, cum laude, degrees in electrical engineering from Purdue University and has completed executive development coursework at the Harvard Business School and Northwestern University’s Kellogg School of Management.


Laurie Ellenberger – Sr.Vice President,  Finance, Accounting & IT

Mrs. Ellenberger joined PTS Diagnostics in May 2015 and was appointed to her current role in March 2018. She leads the Finance and Accounting team as well as Payroll and Benefits plus oversees the Customer Resource Management (CRM) system. She has more than 25 years of experience in a variety of finance roles, including forays in manufacturing, banking, insurance, retail, and distribution. Her career began as an auditor with Coopers & Lybrand and then progressed into management roles with Levy Home Entertainment, a division of the Charles Levy Company, Norwood Promotional Products, BIC and eventually, hhgregg, where she was instrumental in developing strategies to create an environment of effective compliance standards and sound financial practices. Mrs. Ellenberger holds a Bachelor of Science in Accountancy, cum laude, from DePaul University and is a Certified Public Accountant, registered in both Illinois and Indiana. 


Jim Zarvos – Senior Advisor, Global Strategy

Mr. Zarvos joined the PTS Diagnostics team in 2006 as a business consultant specializing in high-performance teams, leadership development, and executive coaching. His current role at PTS Diagnostics includes helping shape the organizations’ strategy and culture while expanding leadership effectiveness. Mr. Zarvos is the founder of Paradigm Consulting International and has worked with many organizations such as JPMorgan Chase &Co., Eli Lilly, Careerbuilder.com, American Express, and Southwest Airlines where he has successfully accelerated people’s ability to lead effectively, communicate, and produce unprecedented results. He received a Bachelor of Business degree from the University of Texas at Austin.

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